Hi,
I can’t quite visualize what you are trying to do, a figure would help. There isn’t an RF valve feature currently, what we do support are 1) remote stations, where one OpenSprinkler (master) can send command to another OpenSprinkler (remote) to open / close valves on the remote controller; 2) RF stations, where the station is typically a RF power socket — technically this is not a valve, but if you plug a transformer to the power socket and connect it to a valve, then it becomes an RF valve.
If I can understand your request better, I can give you further instructions. Again, a figure would help.